Extendable beverage stacker base



FIG. 1 is a facing, right side, and top perspective view of an extendable beverage stacker base employing my design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is the facing, right side, and top perspective view thereof shown during use in an extended conformation; and,

FIG. 9 is the facing, right side, and top perspective view thereof shown during use with one or more stacked beverages.

The dotted lines are for illustrative purposes only to show exemplary use of the design, and form no part of the claimed design. 

The ornamental design for an extendable beverage stacker base, as shown and described. 